Puppet-valve for air-compressors.



Patented July I7, I900.

m. BULKLEY. PUPPET VALVE FOR ME ,CDHPRESSORS.

(Application filed Ian. 15, 1900.)

(No Model.)

ar r/ M a W 7 0 m M i I m h b nHu @Hh ,i

UNITED STATES PATENT OFFICE.

MILTON BULKLEY, OF OAKLAND, CALIFORNIA.

PU PPET=VALVE FOR AlR-COMPRESSORS.

SPECIFICATION forming part of Letters Patent No. 653,860, dated July 1'7, 1900. Application filed January 15, 1900.. Serial No. 1,449. (No model.)

To all whom it may concern:

Be it known that I, MILTON BULKLEY, a citizen of the United States, residing at Oakland, county of Alameda, State of California, have invented certain new and useful Improvementsin Puppet-Valves for Air-Compressors; and I do hereby declare the following to be a full, clear, and exact description of the same.

Myinvention relates to that class of puppetvalves especially adapted for the suctionvalves of air-compressor cylinders. These valves are usually spring-controlled and are set in the cylinder-head in comparatively large numbers. It is very desirable to have them operate or beat in unison; but where the controlling-springs have no means for regulating their tension this result cannot be reached, and the consequence is an irregularity in action, which causes hammering, and a reduction in the volumetric efficiency of the compressor. To avoid these difficulties by providing means for regulating the valves to cause them to beat in unison is one object of my invention.

Another object -is to provide means for readily and effectively seating the valve, particularly when of that form in which the valve, its stem, and stem-head are made in one piece, to avoid the trouble of the usual independent or separable head shaking off the stem.

With these ends in view my invention consists in means for regulating the tension of the controlling-spring of each valve whereby all the valves may be caused to beat in unison; and, further, it consists in the combination and arrangement of parts for seating the valve,which I shall hereinafter fully describe.

Referring to the accompanying drawings, Figure 1 is a longitudinal section of my puppet-valve, showing it applied to the cylinderhead. Fig. 2 is a side view of my puppetvalve. Fig. 3 is a view of the divided or seetional guide.

A is the shell or holder of the valve, screwed into the head 13 of the cylinder and having at its inner end the seat a for the valve O,which, as shown in Fig. 1, has a stem 0 and a stemhead 0, these parts being in the best form made in one piece.

Screwed into the holder .41 is the guide D, which, as shown in Fig. 3, is a sectional or divided one to enable it to be fitted upon and removed from the valve-stem. It has a flange (Z, which by abutting against an internal shoulder a of the holder defines its place therein, and said guide is held in its seat by a set-screw d,which passes through the holder from the outside at such a place, as is shown in Fig. 1, as to conceal and protect it from loosening behind the head-casting when the holder is seated in said head-casting. Into the outer end of the holder A is screwed an adj Listing-nut E, against the inner end or base of which the base of the spring F finds a seat, Fig. 1, the other end of the spring being snapped under the head a of the valve-stem. The nut E has a set-screw e, which by engag ing with any of several holes, one of which is shown by a in Fig. 1, is adapted to fix said nut in the position to which it is adjusted. The holder A has the peripheral openings o to admit the air. v

By turning nut E the tension of spring F may bevaried' in order to regulate its influence on the valve. Where, as before stated, a large number of these valves are used in the head of an air-compressor cylinder, it is possible with my construction to so regulate their controlling-springs as to cause them all to beat in unison. The springs may be readily fitted to place and removed as necessity may demand. The shell A forms a durable and stable holder easily fitted to the cylinder-head, while the divided or sectional guide D is simple and eflicient and permits the use of the best form of valve--to wit, onein which the valve, its stem, and its head are made in one piece.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In combination with a valve, having a stem and a stem-head, a holder, adapted, at its inner end, to be screwed into the cylinder-head, and having said end formed as a seat for the valve, a nut seated in the outer end of the holder, and a spring seated between said nut and stem-head of the valve, for regulatably controlling said valve.

2. In combination with a valve, having a stem and a stem-head, a holder, adapted, at its inner end, to be screwed into the cylinder-head, and having said end formed as a seat for the valve, a nut seated in the outer end of the holder, a spring seated between said nut and stem-head of the valve, for regulatably controlling said valve, and means on the nut, engaging the holder, for fixing the nut where adjusted.

3. In combination with a valve, having its stem and its stem-head made in one piece therewith, a holder adapted at its inner end to be screwed into the cylinder-head and having said end formed as a seat for the valve, a divided or sectional guide fitted within'the holder and embracing the valve-stem, a spring in the outer end of the holder and operating against the head of the valve-stem for controlling the valve, and means for regulating the tension of the spring.

4:. In combination with a valve, having its stem and its stem-head made in one piece therewith, a holder for seating and carrying the valve, a divided or sectional guide fitted within the holder, and embracing the valvestem, a spring acting against the head of the valve-stem, to control the valve, and a nut screwed into the holder, and acting against the spring, to regulate its tension.

5. In combination with a valve, having its stem'and its stem-head made in one piece therewith, a holder for seating and carrying the valve, a divided or sectional guide fitted within the holder, and embracing the valvestem, a spring acting against the head of the valve-stem, to control the valve,a nut screwed into the holder and acting against the spring to regulate its tension and means on the nut engaging the holder, for fixing the nut where adjusted.

6. In combination with a valve, having its stern and its stem-head made in one piece therewith, a holder for seating and carrying the valve, and adaptedto be fitted, at its inner end, to its bearing, a divided or sectional guide fitted within the holder, and embracing the valve-stem, a set-screwfor holding the guide in place, and seated in the holder, at a point where the bearing to which said holder is fitted will cover it, and a spring for against the head of the valve-stem, to control the valve, and a nut screwed into the holder, and acting against the spring, to regulate its tension.

8. In combination with a valve, having its stem and its stem-head made in one piece therewith, a holder for seating and carrying the valve, and adapted to be fitted, at its inner end, to its bearing, a divided or sectional guide fitted within the holder, and embracing the valve-stein, a set-screw for holding the guide in place, and seated in the holder, at a point where the bearing to which said holder is fitted will cover it, a spring acting against the head of the valve-stem, to control the valve, a nut screwed into the holder, and acting against the spring, to regulate its tension, and a set-screw in said nut, adapted to engage the holder, to fix the nut where ad justed.

In witness whereof I have hereunto set my hand.

MILTON BULKLEY. \Vitnesses:

D. B. RICHARDS, WALTER F. VANE. 

